﻿////////////////////////////////////////////////////////////////////////////
//
// Copyright 2017 Realm Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
////////////////////////////////////////////////////////////////////////////

using System;

namespace Realms.Helpers
{
    internal static class Argument
    {
        public static void NotNullOrEmpty(string value, string paramName)
        {
            if (string.IsNullOrEmpty(value))
            {
                throw new ArgumentNullException(paramName);
            }
        }

        public static void Ensure<T>(bool condition, string message)
            where T : Exception
        {
            if (!condition)
            {
                throw (T)Activator.CreateInstance(typeof(T), message);
            }
        }

        public static T EnsureType<T>(object obj, string message, string paramName)
        {
            if (!(obj is T tObj))
            {
                throw new ArgumentException(message, paramName);
            }

            return tObj;
        }

        public static void Ensure(bool condition, string message, string paramName)
        {
            if (!condition)
            {
                throw new ArgumentException(message, paramName);
            }
        }

        public static void NotNull(object value, string paramName)
        {
            if (value == null)
            {
                throw new ArgumentNullException(paramName);
            }
        }
    }
}
